Adjustable stand



May 29, 1928.

s. B. CULBERTSON ADJUSTABLE STAND his INVENT OR.

lfN/V .3 C'ULEEATSOM ATTO EY5.

Patented May 29, 1928. j

UNITED, STATES PATENT OFFICE.-

GLENN B. cunnnnrson, or INnIAnAroLIs, INDIANA, nssrenon ro ARTHUR n.

s'rnroxnenn. or INDIA Aronrs,INDIANA.

ADJUSTABLE simian.

Application filed March 7,

This "invention relates to a bed stand for reading and writing purposes.

The chief object of the invention is to provide a stand that can be usedfor reading and writing purposes while lying o seated in bed or seatedin a chair. 1

The chief feature-of the invention consists in the universaladjustability of the stand or platform.

Another feature of the invention consists in the knockdown orcollapsible arrangement of the several parts.

Still a further feature of the invention consists in the simplificationof the several parts and the reduction thereof to a minimum number andthese of like character so that they may be formed from a minimum numberof dies.

The full nature of the invention will be understood from theaccompanying draw ings and the following description and claims. i

In the drawings Fig. 1 is a front View of the invention. Fig. 2 is aside elevation thereof.

In the drawings 10 indicates a platform and the same supportscompressible clamps of which four are shown. The clamps comprise aclamping portion 11, the free end terminating in'a loop 12 and the sameis connected to a supporting portion 13 by a loop 14 and said supportingportion has an eye 15 by means of which the same is pivotally anchoredto the back of the platform by the screw 16. The base .13 is extendedbeyond the anchorage asshown and constitutes a bearing for increasingthe pressure exerted bv the clamping portion 11. Any other form of leafclamps maybe mounted on the platform as desired. Each side of theplatform is provided with a rail 17 and herein the same is on the back.Said rails support pivot forming means which in the present inven tion,is shown as an elongated threaded bolt 18 having the head 19 and adaptedto receive the clamping nut 20 at the opposite end.

The framework supporting the pivot and adjustably supporting theplatform consists of a pair of triangular wire members, the same beinginclined, as shown in Fig. 1, for forming an A-frame arrangement. Eachside portion of the framework consists of a single wire having the base'21 and the two upwardly and inwardly directed eaten 1927. Serial I No.173,427.:

sions22 each terminating in an eye 23 receivingthe bolt 18. Adjacent thejunction of eachside 22 with the base 21 is an eye socket 24. The twotriangular side frames have their eyeleted ends secured in spacedrelation bythe rod 18,said ends bearing on washers 25 adjacent the siderails 17 of the platform 10. The lower portions of the triangularside-frames are-also connected together in spaced relation as follows:An arch member, wire or rod 26 has a semicircular loop 27 at each endand each eye 24 is adapted to receive one of the semi-circular loops 27,as shown. Spreading movement of the side frames outwardly at the base ispre-,

vented by the eye 24 engaging the junction 28 of the arch member andloop 27 and inward movement of the arch member 26 is prevented byengagement of the extension 29 with the portion of the side frameimmediately adjacent the eye 24. The resultant construction, therefore,is that the entire framework is relatively rigid when in assembledrelation.

To collapse orknockdown the same, the

eyes 23 are released from the pivot forming projecting ends of the bolt18 or its equivalent, and the side frames are turned inwardly towardseach other. This permits the free end 29 to clear the portion adjacentthe eye 24 and that thus permits the arch member 26 to be tiltedinwardly a suflicient amount so that the several members may be readilydetached if desired. If it is desired to have said members permanentlyconnected together a suitable arrangement may be provided between thejunction of the inclined sides and base of the triangular framework withthe adjacent end of the arch member.

Fig. 2 illustrates a position in which a book is clamped to the platformand the same is held in substantially inverted position so that thereader therebeneath on a bed or the like can read with perfect ease andcomfort. If the stand is to be used with a chair, or by one who issitting up in bed, the platform will be positioned about ninety degreesfrom that shown in Fig. 1. The framework is so arranged that itsubstantially straddles the person whether they be seated in a; chair,or seatedin bed or lying in bed and provides ample clearance. Releasingthe clamping tension of nut 20 permits the standard 1O to be tilted intoany desired position, whereupon threading of the nut will clamp theparts so that the standard will be maintained in the adjusted position.

The invention claimed is: 1. A straddle typefframework for a stand ofthe character described, including a pair of substantially triangularside frames, and;

a pair of arched members connecting adjacent corners of the oppositesides ofsaid triangular frames, said arched members being otherwiseindependent of each other and providing a relatively clear spacetherebeneath. a y

2. A straddle type framework for a stand of the character described,including a pair of substantially triangular side frames. arched meansconnecting adjacent corners of lapsible positioning therebetween whendesired.

3. A device as, defined by claim 2, characterized by each side framecomprising a sinbase angles and the free ends being posigle memberhaving the sockets formed in the tioned adjacent each other and .formedfor a common anchorage. H

In Witness whereof, I have hereunto affixed my signature.

GLENN B. CULBERTSON.

CERTIFICATE 9F (IQRRECTION.

Patent No, 1,671,231. Granted May 29, 1928, to

GLENN B. CULBERTSQN.

it is hereby certified that the above nambereii patent was erroneeuslyissued to Arthur E. Strickland, of Ihdianapeiis, iiiiiiana, as assigneeof entire interest in said invention, whereas said patent sheaiti havebeen issued is ehe inventor said Culbertson and Arthur E. Siiichlahd, eihlriianapeiis, kaiiaha, said Culbertson being assignee of ene-haiiinterest 0:113 in said inventieh, as shewn by the records 1 "ofassignments in this office; and that the said Letters Patent sheuid beread with this correction therein that the same may conform to therecord of the casein the Patent Office.

Signed and sealed this 19th day of June, A. D. 1928.

H M. J. Moore, (Seal) Acting Commissioner of Patents.

